symfony - 如何访问 symfony2 中实体的存储库方法？

Question

我遇到了一个问题，请帮帮我。这是场景:

我有一个实体“User”和相应的存储库“UserRepository”，在我的实体内部只有 getter 和 setter 方法。我已写入 UserRepository 的所有自定义查询。现在在我的 UserController 中，我试图访问我无法访问的存储库方法。
例如
用户实体:

class User
{
    ...

    public function getId()
    {
        return $this->id;
    }

    public function setId($id)
    {
        return $this->id=$id;
    }
    public function setProperty($property)
    {
        $this->property = $property;
    }


    public function getProperty()
    {
        return $this->property;
    }

    ....

    }
  ?>

用户存储库:

class UserRepository extends EntityRepository
{


    public function findUsersListingById($id)
    {
        $queryBuilder = $this->getEntityManager()->createQueryBuilder();

       $query = $em->createQuery(
                    "SELECT U
                    FROM  UserEntityPathGoesHere
                    WHERE U.id IN (".implode(",", $id).")"
                );

        $users = $query->getResult();

        return $users;
    }

    public function sayHelloWorld(){

        echo ' Hello World';
    }

}
?>

用户 Controller

class UserController
{
 ...


$users=$this->getDoctrine()
        ->getRepository('MyUserEntityPath')
        ->findUsersListingById($ids);

    //now I have multiple users I want to iterate through each user for associating additional data with each user

     foreach($users as $user)
     {
        $temp = array();

        //I am able to access getId method which is  defined in User entity
        $temp['id'] = $user->getId();

        //however I am not able to  access method from UserRepository, I tried something like below which gives me error  call to undefined function sayHelloWorld
        $temp['status'] = $user->sayHelloWorld();

       ....

     }


}

……

如何访问实体的存储库方法？是否可以 ？如果不是，那么解决方案的替代方案是什么？

Answer 1

您可以使用学说中的 postLoad 事件并将所需的所有内容注入(inject)实体。事件监听器如下所示:

    <?php
namespace AppBundle\EventListener;


use AppBundle\Entity\MyEntity;
use Doctrine\ORM\Event\LifecycleEventArgs;

/**
 * Class MyEntityListener
 */
class MyEntityListener
{

    public function postLoad(LifecycleEventArgs $eventArgs)
    {
        /** @var MyEntity $document */
        $document = $eventArgs->getEntity();
        if(!($document instanceof MyEntity)){
            return;
        }
        $document->setEntityManager($eventArgs->getEntityManager());

    }
}

和 service.yml:

services:
app.myentity.listener:
  class: AppBundle\EventListener\MyEntityListener
  tags:
    - { name: doctrine.event_listener, event: postLoad }

当然，您的实体需要方法 setEntityManager 并且您已准备好。